diff --git a/cloud-center/requirements.txt b/cloud-center/requirements.txt
index 255f77b..dca2362 100644
--- a/cloud-center/requirements.txt
+++ b/cloud-center/requirements.txt
@@ -16,3 +16,4 @@ fastapi>=0.75.1
 slowapi>=0.1.5
 uvicorn>=0.17.6
 schedule>=1.1.0
+pendulum>=2.1.2